Phase 1, first-in-human, randomized, double-blind, placebo-controlled, multiple-dose-escalation study to evaluate the safety, tolerability and immunogenicity of PRV-101, a coxsackie virus B vaccine, in healthy volunteers.
Thirty two healthy adult subjects will be enrolled into 2 dose cohorts (low-dose and high-dose cohorts, 16 subjects per cohort) and will be randomized in a double-blind manner to PRV-101 or placebo in a 3:1 ratio. Each subject will receive up to 3 administrations of the study drug (PRV-101 or placebo) at 4-week intervals and will be followed for 24 weeks after the final dose. Each cohort will start with a sentinel dosing group (2 subjects). Cohort 2 will commence after safety data from the first 2 doses from all Cohort 1 participants are reviewed.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
QUADRUPLE
Enrollment
32
Clinical Research Services Turku (CRST) Oy
Turku, Finland
Incidence and severity of treatment-emergent adverse events (safety and tolerability)
Adverse events will be assessed by frequency and criteria for severity (mild, moderate or severe)
Time frame: Throughout the 32 weeks of the study
Development of neutralizing antibodies to coxsackie B virus (immunogenicity, efficacy)
Proportion of responders (ie, those that seroconvert or have at least a 4-fold increase in neutralizing antibody titers to any of the coxsackie B virus strains as measured by plaque reduction assay using serial serum dilutions)
Time frame: Days 1, 29, and 57 and Weeks 12 and 32
Titer of antibodies to coxsackie B virus (immunogenicity, efficacy)
Mean and peak geometric mean serum IgG titers of antibodies against any of the coxsackie B virus strains, measured by ELISA
Time frame: Days 1, 29 and 57 and weeks 12 and 32
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